Fix LDAP auth plugin
Fix LDAP auth plugin

- Added missing methods to the LDAP auth plugin
- New config option auth.ldap.use_schroot to enable/disable
  schroot - this disables SSH key uploads and shells, which
  is usefull for some deployments/testing
- The default value for auth.ldap.use_schroot is True, so the
  default behaviour should be unchaged

lym/allura-git,heiths/allura,apache/incubator-allura,lym/allura-git,lym/allura-git,apache/allura,heiths/allura,heiths/allura,lym/allura-git,apache/incubator-allura,apache/allura,heiths/allura,apache/allura,apache/incubator-allura,apache/incubator-allura,apache/allura,heiths/allura,apache/allura,lym/allura-git